ASL INTERCOM BS 286 Manuale d'uso - Pagina 5

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7.0
FRONT PANEL CONTROLS & CONNECTOR
1
POWER ON/OFF switch
Mains power push button for switching ON and OFF
the internal power supply.
8.0
REAR PANEL CONTROLS & CONNECTORS
4
A & B LINE connectors
These XLR-3 type connectors are for connecting
remote stations, using standard microphone cable.
There are 2 connectors for channel A and 2
connectors for channel B.
Pin assignments:
Pin 1:
0V / ground shield
Pin 2:
+30V DC power wire
Pin 3:
audio wire
5
AUX INPUT connector
This XLR-3 input is electronically balanced and
accepts audio levels between –18 dBu to +22 dBu
on line level, and –38 dBu to +2 dBu on mic level.
Pin assignments :
Pin 1.
0V / ground
Pin 2:
signal +
signal –
Pin 3:
9.0

TECHNICAL SPECIFICATIONS

System
Dynamic range: 80 dB (1kHz, THD <1%)
Call signal (send): +2.8 mA
Call signal threshold (receive): +2.4 V DC
Supply voltage: +30 V DC (12 V to 32 V)
Intercom line
Impedance: 350 Ω (1 kHz), 2.2 kΩ (DC)
Audio level: nom. -18 dBu, max. +4 dBu
Switch Mode Power Supply
Mains voltage: 100 - 240 V AC, 50/60 Hz
Output voltage: +30 V DC (+/- 5%)
Max output power: 45 W
Max power consumption BS 286: 60 watts
ASL reserves the right to change specifications without prior notice
PAGE 5
User Manual BS 286 / February 2011 © ASL Intercom BV
2
MAINS POWER LED
This LED illuminates if the unit is switched on.
3
AUX VOLUME control knobs
These knobs adjust the level of the AUX input to
each of the two intercom lines.
Next to the AUX input is an INPUT LEVEL switch for
selecting either line level or mic level. When mic
level is selected, +30V DC phantom power is
supplied to pin 2 and 3 of the AUX input connector.
With the MIC GAIN trimmer one can adjust the input
sensitivity when mic level is selected.
6
FUSE Holder
The fuse protects the BS 286 against severe internal
damage, in case of malfunction in the power section.
Before replacing a fuse the mains cord must be
disconnected from the mains outlet.
7
MAINS Inlet
IEC Mains connector
Aux Input
Input Impedance:
30 kOhms (line level)
4.6 kOhms (mic level)
Nominal Input Level:
-18 to +6 dBu (line level)
-38 to -14 dBu (mic level)
Max. Input Level:
+22 dBu (line level)
+2 dBu (mic level)
Phantom Power: +30 V DC (when mic level is
selected)
0 dBu defined as 775 mV rms into open circuit.